TODAY OCT15
TEMPERATURE46
HUMIDITY61
PRESSURE30.32
WIND COND.320 11.4
  • 5740Tue
  • 5835Wed
  • 5842Thu
  • 5743Fri30%50%
  • 5836Sat
daynightWeather update from St. Louis Regional Airport at
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Maryville Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January24°F41°F31°F3.4"
February25°F43°F33°F3.7"
March38°F57°F46°F3.1"
April47°F68°F56°F6.6"
May56°F76°F65°F6.1"
June65°F85°F75°F3.5"
July67°F87°F77°F7.3"
August66°F86°F75°F6.8"
September58°F80°F68°F4.4"
October47°F68°F57°F6.7"
November36°F56°F45°F4.9"
December28°F43°F35°F6.3"

Did you know?

  • The highest monthly average temperature in Maryville for July is 77 degrees.
  • The lowest monthly average temperature in Maryville for January is 31 degrees.
  • The most monthly precipitation in Maryville occurs in July with 7.3 inches.
  • The air quality index in Maryville is 20% worse than the national average.
  • The pollution index in Maryville is 19% worse than the national average.

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Maryville air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexMaryvilleIllinoisNational
Air quality index604150
Pollution index6,055,6403,347,2955,066,862

Maryville air quality information

MeasurementTotal
Days measured365
Days with good air quality99
Days with moderate air quality231
Days w/ poor A.Q. for sensitive groups33
Days with unhealthy air quality2

Maryville air quality information

PollutantTotal
Arsenic0.010%
Benzene0.070%
Carbon Tetrachloride0.040%
Lead0.100%
Mercury0.230%

Average monthly Maryville temperature with heat index

Maryville monthly precipitation with daily maximum

Maryville monthly snow depth with daily maximum

Maryville monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Alhambra, IL5236020%
Bethalto, IL9,3646020%
Centreville, IL5,1276020%
East Carondelet, IL5236020%
Fairview Heights, IL16,7936020%
Maryville, IL7,8376020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Ruidoso, NM7,8331570%
Fairview, GA7,8434412%
Wahpeton, ND7,8443530%
Inverness, IL7,8446020%
Olivette, MO7,8306020%
Maryville, IL7,8376020%
Source: The Maryville, IL weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.